2004 Pontiac Bonneville - Page 5 - Answered Questions & Fixed issues

this may be due to a few things, it may be a bad blend door actuator, this is the motor that turns the door to give hot or cold air, the next thing is maybe compressor connection is loose or the system is low on gas. start the car and see if the compressor clutch kicks in then if it does try turning the temp control to hot then cold and see if that works maybe the blend door is stuck,

did you put wagner pads with built in shims, or another brand that has separate shims for the back of the pads?

Check for the fuse to be blown,and check the blower relay,it could be bad,and of course the fan switch connector could be burned,and not connecting.If this was helpful please rate,thank, you

Best way to erase the codes causing the light to come on is with a scan tool or code reader.Alternatively you can disconnect the battery cables for a few minutes.This will erase codes but may also cause the vehicle to run poorly for a few minutes until the computer relearns values.If your radio has a theftlock it may require a code to be put in before it can be used again.

That is when you want to add it or check it.
If you need to add fluid you have a leak,repair it,first.

It sounds like a loose battery connection. Check for loose cables and clean the battery posts and terminals. If the battery looks like the sides are bulging out then you might want to replace the battery.

you have to get at it from the rear under the hood

There are more then 2 modules.It depends on what codes you have.The first thing would be to check the fuses.All of them.Under the hood and under the rear seat left side.What you need to do is write all the codes down and clear them all.Then drive it til you get a check engine light or check them later if no light comes on.Some codes will not trigger a light.Hope this helps.Good luck.Let me know what you find.

should be under the dash or on the side

at blower motor connection, disconnect wires and run a 12v line to the positive side of motor and ground the other side if need be. if motor runs then you have a fuse or a wire problem. if it does not run. then blower motor is bad.

its the fuel sending unit in your gas tank mines going up to.while your tanks down you should do the fuel pump too.

Take the nuts off those 4 long bolts . The whole tail light assembly will pull out. The you can see what kind of bulbs to get.

Disconnect your negative battery cable for a minute or two.this will reset the radio.If this was your problem the radio will eject the disc when battery cable is reconnected.Your cd player should work normally again.This is common on gm vehicles.Hope this helps.

I've researched this problem thoroughly as all of my gauges on my '04 Bonneville GXP are producing erratic readings. The only two solutions are to replace the entire cluster which can cost in excess of $700 or replace the six "stepper" motors behind the cluster. Replacing them can only be done by deslodering the old ones and soldering in replacement ones.

I think it time it had a oil and filter change.It sounds like you filter is clogging.Do that ASAP.

Take off the headlights (two or three 4" screws on each) and stick your hand and arm down into the lower bumper to get to them

it sound like a simple fix to me, there are two things you can try, first if there is a clamp on the hose tighten the clamp , 2 change the hose, this should solve your problem....


good luck


let me know if this worked

Must remove the bottom pan.

It might not be anything wrong with your fuel sending unit. Keep an eye on your other gauges. I own a 2004 Pontiac Bonneville GXP. All of my gauges have started acting erratically. It started with my Temp. gauge, moved on to my speedometer, and now my oil pressure , fuel level and batty volt gauges are affected too. Its a very common problem with GM vehicles.

Check to see if the third brake light works. The brake switch works both the crusie and the 3rd brake light